Select the function that represents the simple interest formula.
A. A(n) = P+ (n - 1)i. P, where nis a positive integer
O B. A(n) = n + (i – 1). P, where n is a positive integer
O C. A(n) = (n − 1)(P•n)', where n is any real number
O D. A(n) = P(1 + )" – 1, where nis a positive integer